person who answering get 100
points plz​

Answer:

d. Two soccer balls that are touching each other

Explanation:

Let [tex]m_1[/tex] be the mass of a tennis ball, [tex]m_2[/tex] is the mass of a soccer ball.

As the mass of a soccer ball is more than the mass of a tennis ball, so

[tex]m_2 > m_1[/tex]

Let [tex]d_1[/tex] be the distance between the centers of both the balls near each other and [tex]d_2[/tex] be the distance between the centers of both the balls touching each other.

So, [tex]d_2 > d_1[/tex]

The gravitational force, F, between the two objects having masses M and m and separated by distance d is

[tex]F=\frac{GMm}{d^2}[/tex]

Where G is the universal gravitational constant.

As, the gravitational force is directly proportional to the product of both the masses and inversely proportional to the square of the distance between them,  so selecting the larger mass ([tex]m_2[/tex], soccer ball) separated by a lesser distance ([tex]d_2[/tex], touching) to get more gravitational force.

Therefore, there will be a larger gravitational force between them when two soccer balls touching each other.

Hence, option (d) is correct.

Answer:

Two soccer balls that are touching each other

Explanation:

I got it right on the test.

Answer:

the answer is 10n to the left. option B

Explanation:

when two sides are parallel to each other you subtract

for example

f1+f2=R2

30n-20n=10n

Answer:

[tex]F=\frac{Gm_1m_2}{r^2}[/tex]

where , F = Gravitational force

G = Gravitational constant

[tex]m_1[/tex] = mass of first object

[tex]m_2[/tex] = mass of second object

r = distance between the two objects

As Gravitational force is inversely related to the distance between two objects, lesser is the distance , more will be the gravitational force. As distance between C and D is more , the force shoulld have been less. That means the product of the masses of the objects C and D is more than the product of the masses of the objects A and B.

Answer:

m

Explanation:

m

Answer:

A boat being accelerated by the force of the engine. The boat pushes through the water as chemical energy is transferred into kinetic energy.

Bringing water to the boil in an electric kettle.

Answer:

N

O

O

B

Explanation:

D- Dont

G- Get

P- people

T- to

D- do

W- work

F- for

Y-You

This scenario is directly related to the Inertia of direction, which states that an object will stay moving in the same direction unless a force acts on it.

If you need to add more to the answer above, you can probably say something about how the sudden change in direction will cause your body to want to continue on in the direction it was originally going, so the car veering suddenly will cause you to be violently pulled in it's direction.

I like to think of it like a car crash, the reason why head-on collisions are so deadly are because the car will halt but your body will continue moving at the same speed the car was going.

That's my best guess. Hope this helps! :)

Answer:

Effi = 75 %

Explanation:

That is, the 6000 [J] is electrical energy that is transferred to the liquid, of that amount of energy 1500 [J] is dissipated or lost.

That is, from that amount of energy the difference between the energy that is supplied and the one that is lost is the energy that absorbs the liquid in the kettle.

[tex]Q=6000-1500\\Q=4500[J][/tex]

That is 4500 [J] enter the liquid that is heated.

Efficiency can be calculated as the amount of energy that the liquid receives over the energy that is supplied.

[tex]Effi = 4500/6000\\Effi = 0.75[/tex]

Answer:660

Explanation:

Answer: true

Explanation:

Answer:

a. Potential energy decreases and Kinetic energy increases

Explanation:

Because as he comes down due to its steepness the speed of the boy or you can say his KE increases and since he comes from a high position (hill) to the lower ground his potential energy decreases simultaneously

Answer:

Potential energy decreases and kinetic energy increases.

Explanation:

That was the answer on my CK12

Answer:

1) The strength of the electromagnet increases   →   Place a magnetic core inside the coil of wire

2) The electromagnet turns off    →    Turn off the battery supply

3) The poles of the electromagnet reverse     →    Change the direction in which the current flows

Explanation:

when current passes through a coil it behaves a an electromagnet.

Magnetic field strength is given by

B = μ N I  

N is no of turns and

I is the current through coil

μ is permeability of the medium or core in the coil.

1). Magnetic core increase permeability μ so it will strengthen magnetic field:

B = μ N I

2). When the battery turns off current becomes zeroi.e I=0

So B = μ N * 0

⇒ B = 0

so electromagnet turns off

3). Direction of magnetic field can be determine by right hand rule, i.e curl the fingers in the direction of current, thumb will point in the direction of north pole.

so changing current direction will change direction of magnetic field.

Answer:

Blue

Explanation:

The colors of the rainbow are known by the acronym; ROYGBIV.

This is;

Red, Orange, Yellow, Green, Blue, Indigo, and Violet.

From research, their respective wavelengths on the average are;

Red: 665 nm

Orange; 630 nm

Yellow; 600 nm

Green; 550 nm

Blue; 470 nm

Indigo; from 445nm to 464 nm

Violet; less than 400 nm

This means that from Red to Violet in that order, wavelength is decreasing in a descending order.

Now in refraction, the light with shortest wavelength will be bent the most while that with longest wavelength will be bent the least.

Thus, violet bends the most.

However, violet is not included in the options. So the next one that will bend the most after violet among the options given is Blue.

Explanation:

The frequency of the engine is given by :

[tex]f=\dfrac{rpm}{60}[/tex]

We have, the engine increases its performance from zero to 2700 rpms.

Frequency,

[tex]f=\dfrac{2700}{60}\ \text{cycles per second}\\\\f=45\ \text{cycles per second}[/tex]

The time period of the engine is given by :

T = f/f

So,

[tex]T=\dfrac{1}{45}\ s\\\\T=0.023\ s[/tex]

Hence, the required frequency and the period is 45 cycles/second and 0.023 seconds respectively.

Answer:

The amount of friction depends on the force pushing the surfaces together. If this force increases, the hills and valleys of the surfaces can come into closer contact. The close contact increases the friction between the surfaces. Objects that weigh less exert less downward force than objects that weigh more.

Explanation:

Friction depends partly on the smoothness of the contacting surfaces, a greater force being needed to move two surfaces past one another if they are rough than if they are smooth.

Answer:

trump

Explanation:

yee hawww

Answer:I think a closed system

Explanation:

Explanation: Slowing Down (or Stopping) occurs when the force of kinetic friction is greater than that of the external force. This also follows Newton's first law of motion as there exists a net force on the object.

Answer:

In New York City, weather observations have been taken in Central Park dating back to 1868. In the 150 years of records the city’s temperature extremes span 121 degrees ranging from a high of 106 on July 9, 1936 to a low of minus 15 on February 9, 1934. In Los Angeles temperatures have been taken at a downtown location since 1877 and extremes there range from a high of 113 on September 27, 2010 to a low of 28 degrees recorded on three occasions, most recently January 4, 1949, an 85-degreee range.

Explanation:

'm pretty sure that's the answer to your question.

Answer:

1. 431.2newtons

2. 1.47meters per second squared

Explanation:

f=ma

force of friction=normal force×coefficient of friction

normal force = mass× gravity

1.

nf=110kg × 9.8m/s^2 = 1078newtons

f=nf×cf

f=1078×.4=431.2

1

f=1078×.25=269.5

431.2-269.5=161.7

161.7=110kg× a

a=1.47

Answer:

centripetal force.

Explanation:

Answer:

centripetal force - force directed toward the center of a circle,

    causes an object to move in a circle.

Explanation:

Have a gooood day!

Answer:

393.6m/s

Explanation:

Given parameters:

Acceleration  = 8.5m/s²

Distance  = 300m

Final velocity  = 400m/s

Unknown:

Initial velocity  = ?

Solution:

To solve this problem, we use the expression below;

             v² = u²  + 2as

v is the final velocity

u is the initial velocity

a is the acceleration

s is the distance

      So;

               v²  - 2as = u²

        u²   = v²   - 2as

        u²  = 400²   - (2 x 8.5 x 300)  

         u   = 393.6m/s

Given parameters:

Acceleration = 0.0m/w

Initial velocity = 0m/s

Final velocity  = 00m/s

Unknown:

Distance traveled  = ?

Solution:

To solve this problem, we use the expression below:

     q0   = y   + 0w

W is the final velocity

Y is the initial velocity

C is the acceleration

P is the distance

           0²  = 0²   +  (0 x 0.0 x S)

           000  = 00.0S

             S = 0m

Answer:

Acceleration

Explanation:

The advertisement is describing the acceleration of the car.

Acceleration is the rate of change of velocity per unit of time. It can be expressed mathematically as;

 Acceleration  = [tex]\frac{v - u}{t}[/tex]  

 v is the final velocity

 u is the initial velocity

 t is the time taken

 Any quantity that specifies the rate of change of velocity of a body within a given time frame is describing its acceleration.

Answer:

a large beach ball

Explanation:

3.00 x 0.68= 2.04

To find magnification, you multiply your object by the factor

Answer:

I believe it's A

Explanation:

Answer:

Due to their mass

Explanation:

If the same strength force is exerted on two objects they might be affected differently due to their mass.

The way objects reacts to a force impact is largely dependent on their mass.

The mass of an object is the amount of matter it contains.

According to the Newton's second law of motion, the force applied on a body is directly proportional to the product of its mass and acceleration.

       Force  = mass x acceleration

Therefore, the way a force acts on a body is a function of its mass.

Answer: The answer is A! The Circulatory system.

Explanation:

Answer:

A

Explanation:because its right and i just did it  hope this helps please mark me

Answer:

The crate should be released 3,080 m in front of the target

Explanation:

Horizontal Launch

When an object is thrown horizontally with a speed v from a height of h, it describes a curved path ruled by gravity until it hits the ground.

The range or maximum horizontal distance traveled by the object can be calculated as follows:

[tex]\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}[/tex]

The airplane drops a crate horizontally from a height of h= 2,750 m when flying at v=130 m/s. The range or maximum horizontal distance the crate reaches is:

[tex]\displaystyle d=130\cdot\sqrt{\frac {2*2,750}{9.8}}[/tex]

Operating:

[tex]\displaystyle d=130\cdot\sqrt{561.2245}[/tex]

d = 3,080 m

The crate should be released 3,080 m in front of the target

Answer:

9.5km

Explanation:

To solve this problem, we add the distances given together.

The distance is the sum of the length of path covered. It is a scalar quantity and has only magnitude but no directional attribute.

Distance walked to friend's house  = 500m

Distance to mall  = 5km

              Since 1000m = 1km, 5km will be 5000m

Distance back to house  = 4km

                In m, this gives 4000m

So;

 Total distance covered  = 500m + 5000m + 4000m  = 9500m

Since 1000m = 1km;

        Then, 9500m will given 9.5km